Why do most smartphones not have a physical keyboard?

Most probably because of 2 trends in the smartphone industry. Phones get thinner and thinner, and losing a physical keyboard makes a phone a lot less thick. Screens on phones kept getting bigger, and started using touchscreen.

1. Do smartphones have a keyboard?
2. Does anyone make a phone with a keyboard?
3. Can I use a physical keyboard on my phone?
4. What is the difference between on screen keyboard and physical keyboard?

Do smartphones have a keyboard?

Although earlier BlackBerry smartphones had physical keyboards, all smartphones today use a touchscreen keyboard to enter text (see BlackBerry).

Does anyone make a phone with a keyboard?

For Shenzhen-based Unihertz, that has been making phones with physical keyboards. I tested one a couple of years ago and although I liked the hardware, it was a bit of a bulky brick. Others felt that way, too. And so Unihertz' newest product, the Titan Slim, is much smaller.

Can I use a physical keyboard on my phone?

On your phone, go to Settings and then the System page. Scroll down until you find the section entitled “OTG storage,” and turn on the option. When you connect the USB OTG cable to the physical keyboard, you will be able to use the keyboard to type on your phone.

What is the difference between on screen keyboard and physical keyboard?

A virtual keyboard is a software component that allows the input of characters without the need for physical keys. The interaction with the virtual keyboard happens mostly via a touchscreen interface, but can also take place in a different form in virtual or augmented reality.